I'm having a new gas boiler installed.
Currently, the gas meter is in the garage, and the new boiler will be located in the house, in place of the old one .
The house & garage are seperated by a 3ft wide path.
The existing gas pipes (There are 3 x 15mm pipes, feeding the gas fire, cooker, & existing boiler) running under the path between the garage & the house.
The plumber tells me the gas pipe between the garage & house has to be replaced with 22mm pipe.
My questions are:
1) What precautions have to be taken when running pipes under the path, should they be ran in some kind of protective ducting ?2) Is it ok to use copper pipe, or should iron pipes be used ?
3) Will one 22mm pipe between the meter & the house be sufficient ?(The existing pipes don't appear to be protected in any way, and I wan't to make sure the plumber complies with the relevant regulation(s) )
TIA, woodglass